CVE-2013-6420
The asn1_time_to_time_t function in ext/openssl/openssl.c in PHP before 5.3.28, 5.4.x before 5.4.23, and 5.5.x before 5.5.7 does not properly parse (1) notBefore and (2) notAfter timestamps in X.509 certificates, which allows remote attackers to execute…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 35.6%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
The asn1_time_to_time_t function in ext/openssl/openssl.c in PHP before 5.3.28, 5.4.x before 5.4.23, and 5.5.x before 5.5.7 does not properly parse (1) notBefore and (2) notAfter timestamps in X.509 certificates, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted certificate that is not properly handled by the openssl_x509_parse function.
- CVSS 2.0
- 7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
- EPSS
- 35.63% probability · 98th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- php/php · opensuse/opensuse · apple/mac os x
- Source
- secalert@redhat.com
References
- http://forums.interworx.com/threads/8000-InterWorx-Version-5-0-14-Released-on-Beta-Channel%21
- http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=c1224573c773b6845e83505f717fbf820fc18415
- http://lists.opensuse.org/opensuse-updates/2013-12/msg00125.html
- http://lists.opensuse.org/opensuse-updates/2013-12/msg00126.html
- http://rhn.redhat.com/errata/RHSA-2013-1813.html
- http://rhn.redhat.com/errata/RHSA-2013-1815.html
- http://rhn.redhat.com/errata/RHSA-2013-1824.html
- http://rhn.redhat.com/errata/RHSA-2013-1825.html
- http://rhn.redhat.com/errata/RHSA-2013-1826.html
- http://secunia.com/advisories/59652
- http://support.apple.com/kb/HT6150
- http://www.debian.org/security/2013/dsa-2816
- http://www.php.net/ChangeLog-5.php
- http://www.securityfocus.com/bid/64225
- http://www.securitytracker.com/id/1029472
- http://www.ubuntu.com/usn/USN-2055-1
- https://bugzilla.redhat.com/show_bug.cgi?id=1036830Patch
- https://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c04463322
- https://www.sektioneins.de/advisories/advisory-012013-php-openssl_x509_parse-memory-corruption-vulnerability.htmlExploit
- http://forums.interworx.com/threads/8000-InterWorx-Version-5-0-14-Released-on-Beta-Channel%21
- http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=c1224573c773b6845e83505f717fbf820fc18415
- http://lists.opensuse.org/opensuse-updates/2013-12/msg00125.html
- http://lists.opensuse.org/opensuse-updates/2013-12/msg00126.html
- http://rhn.redhat.com/errata/RHSA-2013-1813.html
- http://rhn.redhat.com/errata/RHSA-2013-1815.html
- http://rhn.redhat.com/errata/RHSA-2013-1824.html
- http://rhn.redhat.com/errata/RHSA-2013-1825.html
- http://rhn.redhat.com/errata/RHSA-2013-1826.html
- http://secunia.com/advisories/59652
- http://support.apple.com/kb/HT6150
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.